The department says that the 18-year-old was last seen leaving his residence in College Station on Monday at 5 p.m. Johnson went to high school in Dallas and police believe he might have traveled to that area.

Lt. Allan Baron says there are no other details available.

Aggies coach Kevin Sumlin released a statement expressing his concern, saying: "Authorities are working closely with his family, friends and law enforcement agencies to help locate him ... We pray for his quick and safe return."

Johnson has appeared in 10 games this season, and has 30 catches for 339 yards and a touchdown.